Issue with SSH Access to Nodes – "Cannot load /users/andria/.ssh/id_rsa"

[Andria Trigeorgi]

I am currently facing an issue where I am unable to SSH into my Emulab nodes. The error message I receive is:

Cannot load /users/andria/.ssh/id_rsa

I’m unsure whether I accidentally deleted the path or the file, but I have already tried to resolve the issue by uploading my SSH key again through the "Manage SSH Keys" interface on Emulab. Unfortunately, this did not solve the problem.

Could you kindly assist me in resolving this issue so I can ssh access my nodes again?

Thank you in advance for your help.

Best regards,

Andria Trigeorgi 

[Leigh Stoller]

> On Feb 7, 2025, at 3:55 AM, Andria Trigeorgi <an.tri...@gmail.com> wrote:
>
> I am currently facing an issue where I am unable to SSH into my Emulab nodes. The error message I receive is:
> Cannot load /users/andria/.ssh/id_rsa
> I’m unsure whether I accidentally deleted the path or the file, but I have already tried to resolve the issue by uploading my SSH key again through the "Manage SSH Keys" interface on Emulab. Unfortunately, this did not solve the problem.

Hi. You will need to provide a link to your experiment status
page so we can assist you.

Leigh

[Andria Trigeorgi]

here is the link to the page for my experiment:

https://www.emulab.net/portal/status.php?uuid=803f58a2-ccce-11ef-af1a-e4434b2381fc

Thank you!

Andria

[Leigh Stoller]

> On Feb 7, 2025, at 5:28 AM, Andria Trigeorgi <an.tri...@gmail.com> wrote:
>
> here is the link to the page for my experiment:
> https://www.emulab.net/portal/status.php?uuid=803f58a2-ccce-11ef-af1a-e4434b2381fc

OK thanks. So are you having problems trying to log into your
nodes from your “home” location? Or problems logging in between
nodes in the experiment? Are you forwarding your ssh key via
a forwarding agent?

A good thing to do in this case is use the -v option to ssh
and send us the log. Be sure not to include any passwords in
the log.

Leigh

[Andria Trigeorgi]

I tried both opening the shell from the Emulab website and running SSH from my local PC. From the website, I got the error shown in the image, and from my local PC, I received the output of the file out.txt when I ran SSH.

[Leigh Stoller]

> I tried both opening the shell from the Emulab website and running SSH from my local PC. From the website, I got the error shown in the image, and from my local PC, I received the output of the file out.txt when I ran SSH.

Hi. Regarding the first, have you tried it in the last
couple of minutes. I noticed that files from your .ssl
and .ssh directory were missing. You should leave both
of these directories alone since they are managed by
our infrastructure.

I regenerated the missing files a couple of minutes ago.
Does that work now?

Leigh

[Andria Trigeorgi]

It was an accident, sorry :/ 

Now it gives me the following error: 

[Leigh Stoller]

> It was an accident, sorry :/
> Now it gives me the following error:

Hi. OK try again. Your home dir and .ssh dir had modified
owner and permission bits that cause sshd to reject all access.
You should avoid changing stuff like this. :-)

Leigh

[Andria Trigeorgi]

Yes! It works! Thank you very much and sorry for the mess!!!

Best regards, 

Andria

[Leigh Stoller]

> I made the same error again. Could you please fix it once more? Sorry about that!

Hi. I am not seeing any problems on pc818.

Leigh

[Andria Trigeorgi]

Now it's OK, it was a short-lived issue. Thanks!